chore: arrange imports in a standard way (#21452)

Fixes all our Go file imports to match the preferred spec that we've _mostly_ been using. For example:

```
import (
	"context"
	"time"

	"github.com/prometheus/client_golang/prometheus"
	"golang.org/x/xerrors"
	"gopkg.in/natefinch/lumberjack.v2"

	"cdr.dev/slog/v3"
	"github.com/coder/coder/v2/codersdk/agentsdk"
	"github.com/coder/serpent"
)
```

3 groups: standard library, 3rd partly libs, Coder libs.

This PR makes the change across the codebase. The PR in the stack above modifies our formatting to maintain this state of affairs, and is a separate PR so it's possible to review that one in detail.

coderd/database/db2sdk/db2sdk.go

@@ -17,8 +17,6 @@ import (
 	"golang.org/x/xerrors"
 	"tailscale.com/tailcfg"
 
-	previewtypes "github.com/coder/preview/types"
-
 	agentproto "github.com/coder/coder/v2/agent/proto"
 	"github.com/coder/coder/v2/coderd/database"
 	"github.com/coder/coder/v2/coderd/rbac"
@@ -30,6 +28,7 @@ import (
 	"github.com/coder/coder/v2/codersdk"
 	"github.com/coder/coder/v2/provisionersdk/proto"
 	"github.com/coder/coder/v2/tailnet"
+	previewtypes "github.com/coder/preview/types"
 )
 
 // List is a helper function to reduce boilerplate when converting slices of

coderd/database/dbauthz/customroles_test.go

@@ -8,7 +8,6 @@ import (
 	"github.com/stretchr/testify/require"
 
 	"cdr.dev/slog/v3"
-
 	"github.com/coder/coder/v2/coderd/coderdtest"
 	"github.com/coder/coder/v2/coderd/database"
 	"github.com/coder/coder/v2/coderd/database/db2sdk"

coderd/database/dbauthz/dbauthz_test.go

@@ -20,7 +20,6 @@ import (
 
 	"cdr.dev/slog/v3"
 	"cdr.dev/slog/v3/sloggers/slogtest"
-
 	"github.com/coder/coder/v2/coderd/coderdtest"
 	"github.com/coder/coder/v2/coderd/database"
 	"github.com/coder/coder/v2/coderd/database/db2sdk"

coderd/database/dbauthz/groupsauth_test.go

@@ -9,7 +9,6 @@ import (
 	"github.com/stretchr/testify/require"
 
 	"cdr.dev/slog/v3/sloggers/slogtest"
-
 	"github.com/coder/coder/v2/coderd/coderdtest"
 	"github.com/coder/coder/v2/coderd/database"
 	"github.com/coder/coder/v2/coderd/database/dbauthz"

coderd/database/dbauthz/setup_test.go

@@ -21,7 +21,6 @@ import (
 	"golang.org/x/xerrors"
 
 	"cdr.dev/slog/v3"
-
 	"github.com/coder/coder/v2/coderd/coderdtest"
 	"github.com/coder/coder/v2/coderd/database"
 	"github.com/coder/coder/v2/coderd/database/dbauthz"

coderd/database/dbfake/dbfake.go

@@ -14,7 +14,6 @@ import (
 
 	"cdr.dev/slog/v3"
 	"cdr.dev/slog/v3/sloggers/slogtest"
-
 	"github.com/coder/coder/v2/coderd/database"
 	"github.com/coder/coder/v2/coderd/database/dbauthz"
 	"github.com/coder/coder/v2/coderd/database/dbgen"

coderd/database/dbgen/dbgen.go

@@ -14,13 +14,12 @@ import (
 	"testing"
 	"time"
 
-	"cdr.dev/slog/v3"
-
 	"github.com/google/uuid"
 	"github.com/sqlc-dev/pqtype"
 	"github.com/stretchr/testify/require"
 	"golang.org/x/xerrors"
 
+	"cdr.dev/slog/v3"
 	"github.com/coder/coder/v2/coderd/apikey"
 	"github.com/coder/coder/v2/coderd/database"
 	"github.com/coder/coder/v2/coderd/database/db2sdk"

coderd/database/dbmetrics/dbmetrics.go

@@ -9,7 +9,6 @@ import (
 	"github.com/prometheus/client_golang/prometheus"
 
 	"cdr.dev/slog/v3"
-
 	"github.com/coder/coder/v2/coderd/database"
 )
 

coderd/database/dbmetrics/dbmetrics_test.go

@@ -10,7 +10,6 @@ import (
 
 	"cdr.dev/slog/v3"
 	"cdr.dev/slog/v3/sloggers/sloghuman"
-
 	"github.com/coder/coder/v2/coderd/coderdtest/promhelp"
 	"github.com/coder/coder/v2/coderd/database"
 	"github.com/coder/coder/v2/coderd/database/dbmetrics"

coderd/database/dbpurge/dbpurge.go

@@ -5,12 +5,10 @@ import (
 	"io"
 	"time"
 
+	"github.com/prometheus/client_golang/prometheus"
 	"golang.org/x/xerrors"
 
-	"github.com/prometheus/client_golang/prometheus"
-
 	"cdr.dev/slog/v3"
-
 	"github.com/coder/coder/v2/coderd/database"
 	"github.com/coder/coder/v2/coderd/database/dbauthz"
 	"github.com/coder/coder/v2/coderd/database/dbtime"

coderd/database/dbpurge/dbpurge_test.go

@@ -21,7 +21,6 @@ import (
 
 	"cdr.dev/slog/v3"
 	"cdr.dev/slog/v3/sloggers/slogtest"
-
 	"github.com/coder/coder/v2/coderd/coderdtest"
 	"github.com/coder/coder/v2/coderd/coderdtest/promhelp"
 	"github.com/coder/coder/v2/coderd/database"

coderd/database/dbrollup/dbrollup.go

@@ -8,7 +8,6 @@ import (
 	"golang.org/x/sync/errgroup"
 
 	"cdr.dev/slog/v3"
-
 	"github.com/coder/coder/v2/coderd/database"
 	"github.com/coder/coder/v2/coderd/database/dbauthz"
 )

coderd/database/dbrollup/dbrollup_test.go

@@ -12,7 +12,6 @@ import (
 
 	"cdr.dev/slog/v3"
 	"cdr.dev/slog/v3/sloggers/slogtest"
-
 	"github.com/coder/coder/v2/coderd/database"
 	"github.com/coder/coder/v2/coderd/database/dbgen"
 	"github.com/coder/coder/v2/coderd/database/dbrollup"

coderd/database/dbtestutil/cleaner.go

@@ -15,7 +15,6 @@ import (
 
 	"cdr.dev/slog/v3"
 	"cdr.dev/slog/v3/sloggers/sloghuman"
-
 	"github.com/coder/retry"
 )
 

coderd/database/dbtestutil/db.go

@@ -18,7 +18,6 @@ import (
 	"golang.org/x/xerrors"
 
 	"cdr.dev/slog/v3"
-
 	"github.com/coder/coder/v2/coderd/database"
 	"github.com/coder/coder/v2/coderd/database/pubsub"
 	"github.com/coder/coder/v2/testutil"

coderd/database/pubsub/pubsub.go

@@ -15,9 +15,8 @@ import (
 	"github.com/prometheus/client_golang/prometheus"
 	"golang.org/x/xerrors"
 
-	"github.com/coder/coder/v2/coderd/database"
-
 	"cdr.dev/slog/v3"
+	"github.com/coder/coder/v2/coderd/database"
 )
 
 // Listener represents a pubsub handler.

coderd/database/pubsub/pubsub_linux_test.go

@@ -18,7 +18,6 @@ import (
 	"cdr.dev/slog/v3"
 	"cdr.dev/slog/v3/sloggers/sloghuman"
 	"cdr.dev/slog/v3/sloggers/slogtest"
-
 	"github.com/coder/coder/v2/coderd/database/dbtestutil"
 	"github.com/coder/coder/v2/coderd/database/pubsub"
 	"github.com/coder/coder/v2/coderd/database/pubsub/psmock"

coderd/database/pubsub/pubsub_test.go

@@ -12,7 +12,6 @@ import (
 
 	"cdr.dev/slog/v3"
 	"cdr.dev/slog/v3/sloggers/slogtest"
-
 	"github.com/coder/coder/v2/coderd/database/dbtestutil"
 	"github.com/coder/coder/v2/coderd/database/pubsub"
 	"github.com/coder/coder/v2/testutil"

coderd/database/pubsub/watchdog.go

@@ -8,7 +8,6 @@ import (
 	"time"
 
 	"cdr.dev/slog/v3"
-
 	"github.com/coder/quartz"
 )
 

coderd/database/pubsub/watchdog_test.go

@@ -8,7 +8,6 @@ import (
 
 	"cdr.dev/slog/v3"
 	"cdr.dev/slog/v3/sloggers/slogtest"
-
 	"github.com/coder/coder/v2/coderd/database/pubsub"
 	"github.com/coder/coder/v2/testutil"
 	"github.com/coder/quartz"

coderd/database/querier_test.go

@@ -19,7 +19,6 @@ import (
 	"github.com/stretchr/testify/require"
 
 	"cdr.dev/slog/v3/sloggers/slogtest"
-
 	"github.com/coder/coder/v2/coderd/coderdtest"
 	"github.com/coder/coder/v2/coderd/database"
 	"github.com/coder/coder/v2/coderd/database/db2sdk"